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' @einen faire @anni @fitta IMPROVED BOAT-DETAGHING TAGKLE.

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TO ALL WHOM IT MAY OONCERN:

Be it known that I, G. B. MASSEY, of New York, in the county of New York, and State of New York, have invented certain new and useful Improvements in Boat-Detaehing Devices; and Ido hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawings,

making part of `this specification, and to the lett-ers of reference marked thereon, like letters indicating like parts wherever they occur. g p l To enable others skilled in the art to construct and use my invention, I will proceed to describe it.

My invention consists in so arranging a single rod ina boat as tophold the boat securely in position and permit it to be simultaneously released or detached at both ends by a single movement of the rod.

Figure 14 is a longitudinal vertical section; and

Figure 2, a top planrview of a boat with my improvement applied.

Figures 3 and 4 are views of portions shown in detail.

A represents a strong' metallic rod placed vlengthwise of the boat, as shown in the drawings. Thisrod turns loosely in eyes formed in the upper ends of bolts or rods, c, the lower ends of which are securely fastened to the bottom of the boat, as shown in fig. 1. At each end this rod A has a spiral groove or thread cut in it, as shown more clearly i'n fig. 3. A metallic loop, a, is secured to the lower end of the blocks B, which loop, a, is of proper size to slip over the end of the red A and rest in the groove c. These grooves, c, are made to run in opposite directions at the dilerent ends of the rod A, one forming a right and the other a left-hand thread, so that by-turning the rod A the loop 'a at each end will be forced outward and thrown oii` from the rod. These grooves should be so arranged that a half turn will detach the loops; and the rod A is provided with a handle, li., by which to turn it when required. To prevent the loops from becomingdctached accidentally by the swaying of the boat, or any similar` means, a block or rod, n, may he located directly under or by the side of the rod where the groove is, as shown in iig. 3, by which means the loop a will be prevented from slipping oil' the end ot the rod except when the latter is turned. That portion of the rod in which the groove is cut may he made much 4larger than the rest and fastened on in 'the forni of head or enlarged cylinder, by whichmeans the groove may be formed deeper and a small rod be used, by making the groove of a depth equal to the diameter ol' the rod oi' which the loop or ring a is formed, so as to permit the loop a to rest therein and not protrude beyond the surface of` the rod A, as shown in the left-hand portion of iig. 3. It will be observed that in case any bex, barrel, or other object should, by accident or otherwise, bc'lodgcd against the rod Aat thcpoint where the loop a rests in -the groove, it will not interfere with the movement of the loop a when the rod is turned; and by making the loo-p or ring of such a size that it cannot be moved longitudinally on the rod, except as it rests in and follows the groove, it will be seenv that the loop a cannot be detached from the rod'A except by the turning of the latter, and thatwhen thus constructed the rod or block u may be dispensed with. Itwill be seen that by this construction a positive movement is imparted to the loops a at each end, and that the movenient of the loops at each end of the rod must be uniform and simultaneous, both being detached at the same instant, thus permitting the boat to be dropped fair and on an even keel upon` the water. By using a single rigid rod there is no possibility that one end may be rotated or turned independent of the other, and hence both ends lnust be detached simultaneously. If preferred, instead of the groove, the ends of the rod A may be formed like a cork-screw, as shown in fig. 4, the result being the same in' either case.

By these means I am enabled to produce an apparatus that is extremely simple and cheap, and that can be readily applied to any boat and operated in the simplest possible manner. 1f desired, the handle L may be arranged to be locked or fastened, so that it cannot be turned except by design.

Having thus described my invention, what I claim, is-

Thc rod A, provided with the right andV left-hand grooves, to receive, hold, and disengage the suspending loops or rings a by positive movements, when arranged for use in connection with a boat, substantiallyas set forth.

' G. B; MAssEY.

' Witnesses:

W. C. Dones, H. B. MUNN. 

